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Physical Science Review
Physical Science Review
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physical science review
Flashcards
70 cards
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Practice quiz
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Questions
70
Answers
1
Which graph best shows a change in data over time?
pie graph
line graph
bar graph
all of these
2
The smallest unit of an element that maintains the properties of that element is
an atom
a compound
a substance
a molecule
3
The order of elements in the modern periodic table is based on an element's
atomic mass
chemical symbol
atomic number
name
4
The order of elements in the periodic table is based on
atomic mass
the number of neutrons in the nucleus
the electric charge of the nucleus
the number of protons in the nucleus
5
After formulating a question, the next step in the scientific method is
to test a hypothesis
to perform an experiment
to state a conclusion
to research and collect data
6
The number of energy levels filled in an atom is determined by the
photons
protons
electrons
neutrons
7
Avagadro's number is defined as the number of particles in
one liter of a substance
one gram of a substance
one mole of a substance
one kilogram of a substance
8
Who determined that atoms could be divided?
Dalton
Rutherford
Thompson
Democritus
9
SI is considered a consistent system because it
used to derive units
is used worldwide
has seven base units
dates back to 1795
10
A subatomic particle that has a negative charge is called
compound
element
a molecule
an electron
11
Which of the following is an element?
salt
nylon
iron
sand
12
Convert 1,250 millimoles to moles.
12.5 mol
1.25 mol
125 mol
0.125 mol
13
Avagadro's number is useful for
none of these answers
counting atoms
locating an atom's electrons
counting large objects
14
The resistance of a fluid to flow is referred to as
shape
pressure
viscosity
energy
15
What is Mendeleev known for?
creating today's atomic model
publishing the first periodic table
discovering Mendelevium
discovering protons
16
Two different isotopes of an element have different
numbers of electrons
numbers of neutrons
atomic numbers
numbers of protons
17
Which of these is not a part of Dalton's atomic theory?
Atoms are made of electrons.
Atoms of an element are alike.
Atoms cannot be divided.
Atoms of different elements form compounds.
18
Atoms of elements that are in the same group have the same number of
valence electrons
neutrons
protons
protons and neutrons
19
All matter is made of atoms and molecules that are
moving in the same direction
always fixed in position
always in motion
moving slowly
20
Which of the following is NOT a pure substance?
mixture
element
molecule
compound
21
Which type of graph best shows a comparison of several items or events?
line graph
pie graph
all of these
bar graph
22
When ice melts to form liquid, energy is
absorbed
destroyed
released
created
23
Which of the following is not a fluid
carbon dioxide
water
wood
air
24
Atoms that gain or lose electrons are called
metals
nonmetals
isotopes
ions
25
Which of the following would be a chemical change?
burning
moving
shattering
melting
26
According to modern atomic theory, it is nearly impossible to determine an electron's exact
position
mass
charge
color
27
Which of the following statements
NOT
true?
Neutrons have a negative charge.
Neutrons have no charge.
A nucleus has a positive charge.
Protons have a positive charge
28
The chemical formula for water , H
2
O, means that each water molecule contains
two hydrogen atoms and zero oxygen atoms
one hydrogen atom and two oxygen atoms
two hydrogen atoms and one oxygen atom
two hydrogen atoms and two oxygen atoms
29
Which of the following is a compound?
paint
salt
soup
air
30
Temperature is a measure of the average _____ energy of the particles in the object.
kinetic
chemical
thermal
potential
31
Accuracy is judged by:
none of these
the reputation of the scientist
how close a value is to the true value
the tool used to collect the measurement
32
Archimedes' principle: The buoyant force on a(n) ___equals the weight of the displaced fluid.
object floating on the fluid
object in the fluid
substance dissolving into the fluid
fluid mixing with another liquid
33
According to the kinetic theory of matter, which of the following is true about matter
The higher the temperature, the faster the particles move
The atoms and molecules of a substance are always in motion
Massive particles move slower than less massive particles
all of these answers
34
Which state of matter will hold it's shape without a container?
liquid
solid
gas
plasma
35
Often atoms join so that each atom will have
an equal number of protons and electrons
an even number of electrons
more electrons than either protons or neutrons
a full valence energy level or 8 valence electrons
36
The kinetic theory states that the higher the temperature, the faster the
lighter particles within a substance clump together
molecules of gas rush together
bonds between the atoms break down
particles that make up a substance move
37
Which of these units would be used to measure the height of a bookcase
mole
meter
kelvin
kilogram
38
Magnesium (Mg) is located to the right of sodium because Mg has
more protons.
fewer protons.
no protons.
no neutrons.
39
Which of the following statements is
NOT
true?
neutrons have a negative charge
a nucleus has a positive charge
protons have a positive charge
neutrons have no charge
40
You spill something in the lab, have an accident or injury. Who do you call to help?
security
911
your teacher
ghostbusters
41
Molar mass is defined as
the amount of a substance necessary for a positive charge
the mass in grams of one mole of a substance
the SI base unit that describes the amount of a substance
the number of particles in one mole of a substance
42
Which of these units would be used to measure the mass of a computer?
kilogram
meter
mole
kelvin
43
Evaporation refers to the change of a state from a
liquid to a sold
solid to a liquid
gas to a liquid
liquid to a gas
44
Caroline passed out during lab after smelling a chemical directly. In the future, she should
do the same thing all over again
never participate in lab again
none of these
"waft to whiff"
45
Which of the following elements is an alkali metal?
magnesium
sodium
calcium
mercury
46
Temperature is a measure of the average _____ energy of the particles in the object.
chemical
potential
thermal
kinetic
47
Which of the following is made of at least two different types of atoms?
matter
molecule
element
compound
48
Which SI prefix means one million?
mega-
giga-
milli-
kilo-
49
The change of a substance from a solid directly to a gas is called
condensation
evaporation
melting
sublimation
50
What is an atom's nucleus made of?
only protons
protons and neutrons
anodes
only neutrons
51
The chemical formula for table sugar is C
12
H
22
O
11
. How many oxygen atoms are in each molecule?
2
11
12
22
52
Which property of a substance is
not
affected by physical changes?
size
reactivity
position
shape
53
Atoms have no charge because:
have an equal number of electrons and protons
All of these are correct.
have neutrons in their nuclei.
have an equal number of neutrons and protons.
54
You have 85.5g of Fluorine (molar mass of 19 g/mol). How many mols of fluorine do you have?
85
4.5
45
19
55
Digesting food is an example of
chemical change
buoyancy
change of state
physical change
56
True or False: It's ok to point a test tube of liquid at someone as long as it looks like water
False
True
57
During lab, the following must not be worn
deodorant
sandals/open toed shoes
all of these
clothes
58
As you move from left to right on the periodic table, atoms:
have a lower atomic mass.
become less metallic
have a lower atomic number.
become more metallic.
59
An atom's mass number equals the number of
neutrons
protons plus the number of neutrons
protons
protons plus the number of electrons
60
The first step in the scientific method is usually
collecting data
testing a hypothesis
making an observation
forming a hypothesis
61
Unlike a plasma, a gas
is affected by magnetic fields
has no definite shape
does not conduct electricity
has no definite volume
62
A material that can be represented by a chemical formula is
a mixture
a homogeneous solution
an element
a compound
63
When an atom gains an electron, it becomes
an anion
a reactant
none of these
a cation
64
Goggles are worn during some labs
to protect your eyes
to make you look super cool
only if you don't already wear glasses
to improve your vision
65
A mole is an SI base unit that describes the
electric charge of a substance
volume of a substance
amount of a substance
mass of a substance
66
The main branches of science are
biology, zoology, and ecology
medicine and agriculture
biological, physical, and earth
physics and chemistry
67
Which is not a family of the periodic table?
halogens
noble gases
alkaline-earth metals
anions
68
The three main categories of elements are metals, nonmetals, and
radioactive isotopes
alkali metals
inert gases
metalloids
69
A chemical change occurs whenever
objects change shaped
substances are mixed
hot objects melt
new substance form
70
In Mendeleev's periodic table, elements in each column had similar
properties
atomic masses
symbols
atomic numbers
